Alert archive / Missouri / Heat Advisories in 2011

Heat Advisory 8, NWS Kansas City, MO

August 23, 201116 counties in Missouri; 5 counties in Kansas

NWS Kansas City, MO issued this heat advisory at Aug 23, 2011, 3:32 AM CDT for 16 counties in Missouri; 5 counties in Kansas. It took effect at Aug 23, 2011, 12:00 PM CDT. It was in force for 31 hr.

The area

The counties it named.

The facts

Issued: Aug 23, 2011, 3:32 AM CDT (08:32 UTC)
In effect from: Aug 23, 2011, 12:00 PM CDT
Expired: Aug 24, 2011, 7:00 PM CDT
In force: 31 hr
Issued by: NWS Kansas City, MO

All 21 counties

Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Bates County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Cooper County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Platte County, MO, Randolph County, MO, Ray County, MO, Saline County, MO

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 8.5 hours before the alert went out and 230 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1980 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1449 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: -18 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this heat advisory went out at Aug 23, 12:02 AM CDT, 3 hours 30 minutes earlier.

Area forecast discussion, Aug 23, 12:02 AM CDT, 3 hours 30 minutes before

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Hazardous weather outlook, Aug 22, 7:25 PM CDT, 8 hours 7 minutes before

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The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 9:37 AM CDT	River Flood Warning	EAX	Atchison, Leavenworth	8 hr

Nearby

Heat Advisories in Missouri, 2011 Heat Advisories in Kansas, 2011 Every heat advisory in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.